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//=========================================================
// MusE
// Linux Music Editor
// $Id: filter.cpp,v 1.10 2005/11/06 17:49:34 wschweer Exp $
//
// filter - simple midi filter
//
// (C) Copyright 2005 Werner Schweer (ws@seh.de)
//=========================================================
#include "filtergui.h"
#include "filter.h"
#include "midi.h"
//---------------------------------------------------------
// Filter
//---------------------------------------------------------
Filter::Filter(const char* name, const MempiHost* h)
: Mempi(name, h)
{
data.type = 0; // allow any events
for (int i = 0; i < 4; ++i)
data.ctrl[i] = -1;
gui = 0;
}
//---------------------------------------------------------
// Filter
//---------------------------------------------------------
Filter::~Filter()
{
if (gui)
delete gui;
}
//---------------------------------------------------------
// init
//---------------------------------------------------------
bool Filter::init()
{
gui = new FilterGui(this, 0);
gui->setWindowTitle("MusE: "+QString(name()));
gui->show();
return false;
}
//---------------------------------------------------------
// getGeometry
//---------------------------------------------------------
void Filter::getGeometry(int* x, int* y, int* w, int* h) const
{
QPoint pos(gui->pos());
QSize size(gui->size());
*x = pos.x();
*y = pos.y();
*w = size.width();
*h = size.height();
}
//---------------------------------------------------------
// setGeometry
//---------------------------------------------------------
void Filter::setGeometry(int x, int y, int w, int h)
{
gui->resize(QSize(w, h));
gui->move(QPoint(x, y));
}
//---------------------------------------------------------
// process
//---------------------------------------------------------
void Filter::process(unsigned, unsigned, MidiEventList* il, MidiEventList* ol)
{
for (iMidiEvent i = il->begin(); i != il->end(); ++i) {
if (!filterEvent(*i))
ol->insert(*i);
}
}
//---------------------------------------------------------
// filterEvent
// return true if event filtered
//---------------------------------------------------------
bool Filter::filterEvent(const MidiEvent& event)
{
switch(event.type()) {
case ME_NOTEON:
case ME_NOTEOFF:
if (data.type & MIDI_FILTER_NOTEON)
return true;
break;
case ME_POLYAFTER:
if (data.type & MIDI_FILTER_POLYP)
return true;
break;
case ME_CONTROLLER:
if (data.type & MIDI_FILTER_CTRL)
return true;
for (int i = 0; i < 4; ++i) {
if (data.ctrl[i] == event.dataA())
return true;
}
break;
case ME_PROGRAM:
if (data.type & MIDI_FILTER_PROGRAM)
return true;
break;
case ME_AFTERTOUCH:
if (data.type & MIDI_FILTER_AT)
return true;
break;
case ME_PITCHBEND:
if (data.type & MIDI_FILTER_PITCH)
return true;
break;
case ME_SYSEX:
if (data.type & MIDI_FILTER_SYSEX)
return true;
break;
default:
break;
}
return false;
}
void Filter::getInitData(int* n, const unsigned char** p) const
{
*n = sizeof(data);
*p = (unsigned char*)&data;
}
void Filter::setInitData(int n, const unsigned char* p)
{
memcpy((void*)&data, p, n);
if (gui)
gui->init();
}
//---------------------------------------------------------
// inst
//---------------------------------------------------------
static Mempi* instantiate(const char* name, const MempiHost* h)
{
return new Filter(name, h);
}
extern "C" {
static MEMPI descriptor = {
"Filter",
"MusE Simple Midi Filter",
"0.1", // filter version string
MEMPI_FILTER, // plugin type
MEMPI_MAJOR_VERSION, MEMPI_MINOR_VERSION,
instantiate
};
const MEMPI* mempi_descriptor() { return &descriptor; }
}
|
